Abstract: With the economic structure regulation of China， the increasing air-conditioning load has become the main factor that leads to the growing of tertiary industry and residential power consumption， extension of seasonal peak-valley difference， and deterioration of load characteristics. Thus， air-conditioning load can be regarded as one of the demand-side resources for power grid ancillary services， which will improve the power grid load characteristics and promote safer and more economic operation. Firstly， on the basis of the basic air-conditioning load model， this paper constructs the control strategies of central air-conditioning considering its consumption characteristic. Secondly， air-conditioning load virtual power plant （ACVPP） is modeled on the basis of proposed control strategies from the aspects of dispatched index and power output control. Last， the effect of proposed control strategies and ACVPP power output is verified with a simulation.

Key words: demand response, peak clipping, air-conditioning load, central air-conditioning, virtual power generator